bischoff



(No Model.) 2 Sheets-Sheet 1.

J. G. G. E. BISOHOPF.

LUBRIOATOR. No. 368,702. Patented Aug. 23, 1887.

i 6 f l i 0 WW 1 m JQM KM Q. C, E 35% No Model.) 2 Sheets-Sheet 2. J. G. G. E. BISGHOPP.

LUBRIGATOR.

No. 868,702. Patented Aug. 23, 1887.

5 Zyk II II I i? 6 l O i 0 1M Qq.Q.E.Bid MKX NITED ST TES JOHANN GEORG GOTTLIEB ELIAS BISCHOFF,.OF HAMBURG, GERMANY.

LUBRICATO R.

SPECIFICATION forming part of Letters Patent No. 368,702, dated August 23, 1887. Application filed June 1. 1887. Serial No. 239.981. (No model.)

To all whom it may. concern:

Be it known that I, J OHANN Gnone GOTT- LIEB ELIAS BISOHOFF, a subject of the German Emperor, and a resident of Hamburg, in the German Empire, haveinvented certain new and useful Improvements in Lubricators, of which the following is a specification.

My invention relates to improvements in lubricators for introducing the lubricating mate' rial into the cylinders ofsteam-engines and pumps, and for similar purposes; and the objects of my improvements are to force the lubricant periodically into the said cylinders as long as the piston therein is in motion, and to allow the lubricator to be filled even when it is in function. I attain these objects by the apparatus illustrated in the accompanying drawings, in which Figure 1 is a sectional side elevation, and Fig. 2 a side elevation, partly in section, both figures showing different positions of the working parts. Fig. 3 is a horizontal section of Fig. 2, taken on the line 6t 00.

Similar letters refer to similar parts through out the several views.

The lubricating material is filled into the reservoir b, the interior of which communicates by the canal c with the interior of a small cylinder, a, wherein are arranged two pistons, f and 9, attached to the sliding frame it in such a manner that the piston f is rigidly fixed to the frame,while a certain play is allowed to the piston 9 within the limits of its neck 9'.

The sliding frame It is jointed by the connecting-rod is with the crank t of the shaft m, which is intermittingly rotated by means of a ratchet-wheel, Z, and a ratchet working by a moving part of the steam-engine, pump, 850. Thus the rotation of the shaft mcauses a reciprocating motion of the sliding frame. During the movement toward the crank-shaft in both pistons advance closely, Fig. 1, as the piston f pushes the piston 9 forward, but during the return motion the piston 9 remains at first immovably in the limits of its neck g, whereby the intermediate space between both pistons is filled automatically with lubricating material from the cup b through the channel 0. Hereafter, also, the piston g is taken along by the frame h, whereby the lubricating material is transported over the canal c, Fig. 2, arranged sidewise from the canal c and connecting the cylinder a with the working-cylinder to be lubricated. A small valve, a, is pushed by the pressure of the gas, steam, or fluid of theworking-cylinder toward its seat placed above the valve, thus closing the canal c at the lower end.

To inject the lubricating material into the working-cylinder, the crank t is provided with a finger, 0, which presses the piston 9 toward the pistonf,while the lubricating material in closed between both pistons is above the canal e, and the mouth of the canal c is closed by the piston g Thus the inclosed lubricating material is forced into the canal e. The surplus of pressure thereby produced causesthe valve a to recede from its seat, thus allowing the lubricant to pass through the longitudinal notches of the valve into the working cylinder; but by this evacuation of the lubricant a compensation of pressure, and finally a surplus of seat, thus closing the canal c.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- In apparatus for lubricating working-cylinders of steam-engines, pumps, &c.,the combination of the two pistonsf and g with the reciprocating slide it and the finger 0, together with the cylinder a, provided with canals c and c, substantially as and for the purpose specified.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 10th day of May, 1887.

JOIIANN GEORG GOTILIEB ELIAS BISCIIOFF.

Witnesses:

ALEXANDER SPEoHT, DIEDRIo -I PETERSEN. 

